package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //对前端传来的密码进行md5加密
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override//新增员工
    public void save(EmployeeDTO employeeDTO) {

        System.out.println("当前线程id：" + Thread.currentThread().getId());

        Employee employee = new Employee();
        //对象属性拷贝,相同属性名要一直
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setStatus(StatusConstant.ENABLE);//状态常量类
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //设置当前数据的创建时间和修改时间
       /* employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        //设置当前数据的创建人和修改人
        //TODO后期要改为当前登录用户的ID
        //在jwttoken中存入id，在此时取出
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());*/

        employeeMapper.insert(employee);


    }

    @Override//员工分页查询
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);

        long total = page.getTotal();
        List<Employee> result = page.getResult();

        return new PageResult(total, result);
    }

    @Override
    //启用禁用员工账号
    public void startOrstop(Integer status, Long id) {
        //update语句，把status状态修改，1/0
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();

        //传参传入emp对象，后面修改用动态查询
        employeeMapper.update(employee);
    }

    @Override
    //根据id查询员工信息
    public Employee getById(Long id) {

        Employee employee = employeeMapper.getById(id);
        employee.setPassword("*******");
        return employee;
    }

    @Override
    //修改员工信息
    public void updata(EmployeeDTO employeeDTO) {
        //对象属性拷贝
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);

       /* employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());*/

        employeeMapper.update(employee);
    }

    @Override//修改密码
    public void passwordEdit(PasswordEditDTO passwordEditDTO) {
        //原始密码MD5表示
        String oldpassword = DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes());
        String newpassword = DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes());
        Long empid = BaseContext.getCurrentId();
        Employee employee = employeeMapper.getById(empid);
        if (!oldpassword.equals(employee.getPassword())) {
            throw new PasswordErrorException(MessageConstant.PASSWORD_EDIT_FAILED);
        }
        employeeMapper.updatepassword(newpassword,empid);


    }

}
